1331697339 has 12 divisors (see below), whose sum is σ = 2198357616. Its totient is φ = 760969872.

The previous prime is 1331697337. The next prime is 1331697359. The reversal of 1331697339 is 9337961331.

1331697339 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1331697339 - 2¹ = 1331697337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1331697294 and 1331697303.

It is not an unprimeable number, because it can be changed into a prime (1331697331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10568964 + ... + 10569089.

It is an arithmetic number, because the mean of its divisors is an integer number (183196468).

Almost surely, 2^1331697339 is an apocalyptic number.

1331697339 is a deficient number, since it is larger than the sum of its proper divisors (866660277).

1331697339 is a wasteful number, since it uses less digits than its factorization.

1331697339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21138066 (or 21138063 counting only the distinct ones).

The product of its digits is 275562, while the sum is 45.

The square root of 1331697339 is about 36492.4285160634. The cubic root of 1331697339 is about 1100.1920708683.

The spelling of 1331697339 in words is "one billion, three hundred thirty-one million, six hundred ninety-seven thousand, three hundred thirty-nine".